Proflexes are cheaper and not horribly worse. I love my grillz. They're so easy to clean that I could do it between rounds more thoroughly than I cleaned my Proflexes at the end of the day. Proflexes are bigger, but the grillz will never make you feel restricted. If you've got the extra money, get a grill. If you don't, get the proflex and wear it right. I'm tired of seeing kids wear the strap down to their necks.